RU209901U1 - Air separator device - Google Patents

Abstract

The utility model relates to the field of engine and mechanical engineering, namely to oil systems, and can be used in circulating oil systems to reduce the percentage of air in oil, namely in air separator devices. The technical result of the utility model is to reduce the weight and overall dimensions of the device due to the presence of a nozzle with channels and jets oppositely directed at an acute angle. This design also makes it possible to achieve an increase in the efficiency of the air separator, namely, an increase in the amount of air separated from the oil-air mixture due to the action of the reactive force from the torque that arises from the supply of oil through the nozzle with jets. At the same time, the volume of air bubbles included in the oil-air mixture entering the device decreases, and the action of centrifugal force that arises from the impeller increases the amount of purified oil, with the separation of their flows - the oil is drained into the oil system, and the air is removed into the environment. The technical result is achieved by the fact that in the air separator device containing the outer casing 1 with the inlet 2 for supplying the working oil and the outlet 3 for draining the separated oil, an element with an impeller 5 is concentrically mounted inside the outer casing 1 to create centrifugal force, and the outer casing 1 contains a channel 4 for air outlet, unlike the known one, the air separator device contains a branch pipe 9 for draining the working oil, which is installed concentrically inside the outer casing 1, the element with the impeller 5 for creating centrifugal force has an internal cavity in which the nozzle 6 is concentrically installed, while nozzle 6 is equipped with channels 10 located symmetrically relative to the axis of the air separator, with jets 12 directed at an acute angle relative to the axis of the device to the walls of the pipe 9 for draining the working oil relative to each other in opposite directions, the channel 4 for air outlet is made in the upper part of the outer housing mustache 1, while the outer casing 1 is additionally provided with channels 7 for supplying an oil-air mixture under pressure into the internal cavity 8 in front of the impeller 5, made symmetrically with a uniform distribution relative to the center of the inlet 2 for supplying oil.

Description

The utility model relates to the field of engine and mechanical engineering, namely to oil systems, and can be used in circulating oil systems to reduce the percentage of air in oil, namely in air separator devices.

The air separator device is designed to separate air from the oil-air mixture pumped out from the oil cavities of the pumping system, which are located, for example, in the oil systems of a gas turbine engine. In an oil-air mixture, the concentration of oil is much greater than the concentration of air. But the presence of air in the oil-air mixture adversely affects the operation of various components of gas turbine engines. The air separator allows the oil to be returned to the oil system without air, and the air to be removed outside the oil system, for example, into the environment.

An oil separator for an internal combustion engine is known, which contains a housing, a drive chamber and a separating chamber, which are separated from each other by a first partition, a separating rotating element, a hydraulically driven turbine wheel, one nozzle, which is directed essentially tangentially to the outer peripheral edge of the turbine wheel and a rotating shaft, while next to the turbine wheel and the casing wall there is a second separating wall that runs along the casing wall and along the peripheral edge of the turbine wheel (German Patent DE201720100779 dated February 14, 2017, IPC F01M13/04 B01D45/14 F16N31/02, publ. 15.05 .2018).

The disadvantage of this design is the low efficiency of the oil separator device, due to the fact that in this oil separator, to reduce the percentage of oil in the working gas from the air-oil mixture, the centrifugal force for separating oil from air is formed only by supplying crankcase gas, driving the turbine wheel, at the same time, the oil separator has significant overall dimensions to ensure a given performance, and the oil flows into the drain zone, which requires a forced pumping system. At the same time, this design has large overall dimensions, to ensure the operation of which the following condition is required: the oil pressure in the _transfer chamber P in must be strictly greater than the pressure in the separation chamber P _{pump out} (P _in <P _{pump out} ).

A well-known system for deaeration of the lubrication oil of the mechanism, consisting of a housing divided by a horizontal split into an upper housing with a cover and a lower housing, while the upper housing contains tangentially connected inlet pipes, the lower housing contains a mesh conical separator, and an inner housing is installed inside the upper and lower housings ( Utility model patent No. 159097 IPC F01M1 / 10, B01D19 / 02 published on January 27, 2016, Bull. No. 3).

The disadvantages of this oil deaeration system is the low efficiency of air separation due to the fact that the centrifugal force for separating air from oil is formed due to the design of the housing and the diameter of the oil-air mixture supply channel. At the same time, this design of the oil deaeration system has large overall dimensions, to ensure the operation of which the following condition is required: the oil supply pressure P _in should be less than or equal to the oil pumping pressure P _pump out (P _{in ≤} P _{pump out} ).

The closest is an air separator device containing an outer housing with an inlet for supplying working oil and an outlet for draining the separated oil, an element with an impeller is concentrically mounted inside the outer housing to create centrifugal force, and the outer housing contains a channel for air outlet (Skubachevsky G.S. ., Aircraft gas turbine engines. Design and calculation of parts. - M .: Mashinostroenie. 1981. - 550 p., p. 485 fig. 11.18).

The disadvantages of this device is that the device operates on the principle of a centrifuge, and, therefore, requires large weight and size parameters due to the fact that a mechanical drive is required to create centrifugal force to separate oil from air, and also to ensure the operation of the device, it is necessary to perform conditions under which the oil supply pressure P _{in is} less than or equal to the oil pumping pressure P _pump out (P _{in ≤} P _{pump out} ), which also leads to an increase in the overall dimensions of the structure.

The technical result of the utility model is to reduce the weight and overall dimensions of the device due to the presence of a nozzle with channels and jets oppositely directed at an acute angle. This design also makes it possible to achieve an increase in the efficiency of the air separator, namely, an increase in the amount of air separated from the air-oil mixture due to the action of the reactive force from the torque that arises from the supply of oil through the nozzle with jets. At the same time, the volume of air bubbles included in the oil-air mixture entering the device decreases, and the action of centrifugal force that arises from the impeller increases the amount of purified oil, with the separation of their flows - the oil is drained into the oil system, and the air is removed into the environment.

The technical result is achieved by the fact that in the air separator device containing an outer housing with an inlet for supplying working oil and an outlet for draining the separated oil, an element with an impeller is concentrically mounted inside the outer housing to create centrifugal force, and the outer housing contains a channel for air outlet into unlike the known, the air separator device contains a branch pipe for draining the working oil, which is installed concentrically inside the outer casing, the element with the impeller to create centrifugal force has an internal cavity in which the nozzle is concentrically installed, while the nozzle is equipped with channels located symmetrically relative to the axis of the air separator, with jets directed at an acute angle relative to the axis of the device to the walls of the pipe for draining the working oil relative to each other in opposite directions, the air outlet channel is made in the upper part of the outer housing, while the outer housing is additionally It is additionally equipped with channels for supplying an oil-air mixture under pressure into the internal cavity in front of the impeller, made symmetrically with a uniform distribution relative to the center of the inlet for oil supply.

The figures show:

fig. 1 - air separator device;

fig. 2 - section A-A of Fig. one;

fig. 3 - section B-B of Fig. one;

fig. 4 is a section B-B of FIG. one.

The air separator device contains an outer casing 1 with an inlet 2 for supplying working oil and an outlet 3 for draining the separated oil (Fig. 1).

Also in the upper part of the outer casing 1 there is a channel 4 for air outlet (Fig. 2). Inside the outer casing 1, an element is concentrically mounted to create centrifugal force, which contains an impeller 5 and a nozzle 6. In this case, the impeller 5 has an internal cavity in which the nozzle 6 is concentrically installed (Fig. 1).

The outer casing 1 is additionally provided with channels 7 for supplying an oil-air mixture under pressure into the inner cavity 8 in front of the impeller 5 (Fig. 3). Channels 7 for supplying pressurized oil-air mixture are made symmetrically in the upper part of the outer casing 1 with a uniform distribution relative to the center of the inlet 2 for supplying working oil. The symmetry of the arrangement of channels 7 is necessary for uniform distribution of the air-oil mixture inside the device, thereby increasing the efficiency of the device.

If the channels 7 are not made symmetrically, then, accordingly, the distribution of the oil-air mixture will be uneven, thereby reducing the efficiency of the device.

The air separator device contains a branch pipe 9 for draining the working oil, which is installed concentrically inside the outer casing 1.

The nozzle 6 is provided with channels 10 located symmetrically relative to the axis 11 of the air separator (Fig. 1), with jets 12 directed relative to each other in opposite directions to the branch pipe 9 for draining the working oil (Fig. 3). In this case, the jets 12 are directed at an acute angle α relative to the axis of the device 11 (Fig. 4) to create a torque M _cr of the element with the impeller 5. This direction of the jets 12 is a necessary condition for the separation of the oil-air mixture to create the conditions for the operation of the air separator, namely: the oil supply pressure P _sub is greater than or equal to the oil pumping pressure P _{pump out} : R _sub ≥ P pump _out .

Such an arrangement of jets causes reactive forces from the impeller torque arising from the supply of working oil, which makes it possible to eliminate the mechanical drive of the air separator device, thereby reducing the weight and overall dimensions of the air separator device.

The air separator device works as follows.

From the pumping line, the oil-air mixture under pressure P is _pumped out into the channels 7 and then into the internal cavity 8 in front of the impeller 5. In the inlet 2, the working oil is supplied from the injection line under pressure P _sub . Then the oil through the channels 10 of the nozzle 6 enters the jets 12 (Fig. 3). From the jets 12, oil is supplied at a speed V to the walls of the pipe 9 to drain the working oil, creating a reactive force P, which causes a torque M _cr element with an impeller 5. Under the action of centrifugal force F _cb caused by a torque M _cr , the air-oil mixture is separated by the impeller 5 to the oil that exits through the outlet 3 (Fig. 1) to drain the separated oil, for example, into the oil tank, and to the air that is vented to the atmosphere through the cavity 8 in front of the impeller and the air outlet channel.

The design of the device makes it possible to increase the efficiency of the air separator by increasing the amount of air separated from the oil, as well as to exclude a mechanical drive for the element for generating centrifugal force necessary for separating the oil-air mixture, thereby reducing the weight and size parameters of the device.

Due to the fact that in the air separator device, which contains an outer casing with an inlet for supplying working oil, an outlet for draining the separated oil and a channel for air outlet, an element for generating centrifugal force, which includes an impeller, is concentrically installed inside the outer casing, in contrast to The well-known air separator device contains a branch pipe for draining the working oil, which is installed concentrically inside the outer casing, the element for creating centrifugal force additionally contains a nozzle that is installed concentrically in the inner cavity of the impeller, while the nozzle is equipped with channels located symmetrically relative to the axis of the air separator, with jets directed at an acute angle relative to the axis of the device to the walls of the pipe for draining oil relative to each other in opposite directions, the air outlet channel is made in the upper part of the outer housing, while the outer housing is additionally provided with channels for supplying an oil-air mixture under pressure into the internal cavity in front of the impeller, made symmetrically with a uniform distribution relative to the center of the inlet for oil supply, a reduction in the mass and overall dimensions of the device and an increase in efficiency, namely, an increase in the amount of air separated from the oil-air mixture are achieved.

Claims (1)

An air separator device comprising an outer casing with an inlet for supplying working oil, an outlet for draining the separated oil and a channel for air outlet, an element for generating centrifugal force is concentrically mounted inside the outer casing, which includes an impeller, characterized in that the air separator device contains a branch pipe for draining the working oil, which is installed concentrically inside the outer casing, the element for creating centrifugal force additionally contains a nozzle, which is installed concentrically in the inner cavity of the impeller, while the nozzle is equipped with channels located symmetrically relative to the air separator axis, with jets directed at an acute angle relative to the axis device to the walls of the branch pipe for draining oil relative to each other in opposite directions, the air outlet channel is made in the upper part of the outer housing, while the outer housing is additionally provided with channels for supplying oil-air th mixture under pressure into the internal cavity in front of the impeller, made symmetrically with a uniform distribution relative to the center of the inlet for oil supply.

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